P6KE47-B Equivalent & Substitute Parts

Part Overview

The P6KE47-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 40.2V reverse standoff voltage with a 68.04V maximum clamping voltage and 600W peak pulse power rating in a through-hole DO-204AC (DO-15) axial package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

P6KE47-B

Littelfuse Inc.In Stock: 1100P6KE47-B Datasheet

Current PartRFQ

P6KE47A

Taiwan Semiconductor CorporationIn Stock: 300163P6KE47A Datasheet

DirectRFQ

P6KE47A-B

Littelfuse Inc.In Stock: 980P6KE47A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6KE47-B is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 40.2V (exact match required)
• Voltage - Clamping (Max) @ Ipp: Must not exceed 68.04V
• Power - Peak Pulse: 600W (minimum requirement)
• Package / Case: DO-204AC, DO-15, Axial (mechanical compatibility)
• Mounting Type: Through Hole (circuit board integration)
• Type: Zener (functional classification)
• Unidirectional Channels: 1 (circuit topology requirement)

The substitute parts identified maintain these critical parameters within acceptable engineering tolerances, ensuring functional equivalence in overvoltage protection applications.

Parameter Comparison

Engineering Selection Recommendations

P6KE47A-B (Littelfuse Inc.) is the primary substitute for the obsolete P6KE47-B. Both components are manufactured by Littelfuse Inc., share identical reverse standoff voltage specifications (40.2V), and maintain the same through-hole DO-204AC package configuration. The P6KE47A-B is currently in active production status with full ROHS3 compliance and REACH unaffected certification. The clamping voltage is reduced to 64.8V (compared to 68.04V), providing improved transient suppression performance. Operating temperature range matches the original specification (-55°C ~ 175°C TJ).

P6KE47A (Taiwan Semiconductor Corporation) serves as a secondary substitute option. This component maintains all critical electrical parameters including 40.2V reverse standoff voltage, 600W peak pulse power, and identical package specifications. The part is in active production with ROHS3 compliance. The clamping voltage specification of 64.8V aligns with the P6KE47A-B variant. Selection of this substitute may be appropriate when Littelfuse supply is constrained or when multi-source component strategies are required.

Both substitute parts satisfy the functional requirements of the obsolete P6KE47-B for general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can P6KE47A-B directly replace P6KE47-B in existing circuits?

A: Yes. Both components share the same 40.2V reverse standoff voltage, 600W peak pulse power rating, and DO-204AC through-hole package. The P6KE47A-B is pin-compatible and functionally equivalent for overvoltage protection applications.

Q: What is the difference between P6KE47A-B and P6KE47A?

A: The primary difference is manufacturer. P6KE47A-B is manufactured by Littelfuse Inc., while P6KE47A is manufactured by Taiwan Semiconductor Corporation. Both maintain identical reverse standoff voltage (40.2V), clamping voltage (64.8V), and package specifications (DO-204AC, DO-15, Axial). Selection depends on supply availability and procurement requirements.

Q: Why is the clamping voltage lower in the substitute parts?

A: The substitute parts (P6KE47A-B and P6KE47A) specify a maximum clamping voltage of 64.8V compared to the original 68.04V. This represents improved transient suppression performance, as lower clamping voltage provides better protection against voltage spikes while maintaining the same 40.2V standoff voltage threshold.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both P6KE47A-B and P6KE47A are ROHS3 compliant, matching the compliance status of the original P6KE47-B component.

Q: Can I use P6KE47A (Taiwan Semiconductor) in place of P6KE47A-B (Littelfuse)?

A: Yes. Both components are electrically and mechanically equivalent. The selection between them depends on supply chain considerations, cost factors, and multi-source component strategies. Both maintain identical critical parameters for transient voltage suppression.

Q: What is the operating temperature range for the substitute parts?

A: P6KE47A-B maintains the same operating temperature range as the original part: -55°C ~ 175°C (TJ). Operating temperature specifications for P6KE47A (Taiwan Semiconductor) were not provided in the available data.

Q: Are these parts suitable for power line protection applications?

A: No. All three components (P6KE47-B, P6KE47A-B, and P6KE47A) are designated for general-purpose applications and do not include power line protection features.